Age discrimination is an actual real thing, and unlawful provided that you are old enough to lawfully enter into contracts (18).

Essentially, you (or your attorney) would go to court and file an Unlawful Detainer lawsuit.Good luck.

If after the specified time (in CA it is 3 days), the tenant continues to violate the lease, then an unlawful detainer is filed in your local court.I strongly suggest trying to work with the tenant and communicate for an amenable situation as @Theresa Harris suggests.

If you take DIY possession and do repairs, the heirs might claim your possession was unlawful and you are not entitled to be paid for those repairs.

I filed an unlawful detainer against her (we are in the state of Virginia). 

@Jill F.Oh Everyone knows it’s technically “ unlawful .

(From the release of updates to Virginia Consumer Protection Laws)Real Estate “Unlawful practice: Makes the unlawful and unlicensed practice of contracting, real estate brokering, or real estate sales, in connection with a consumer transaction, unlawful under the Virginia Consumer Protection Act.”

https://rappnews.com/2019/06/30/now-its-the-law-in-virginia/Unlawful practice: Makes the unlawful and unlicensed practice of contracting, real estate brokering, or real estate sales, in connection with a consumer transaction, unlawful under the Virginia Consumer Protection Act.

Unless there is specific written documentation that the tenant knew that the partial payment does not waive the landlord's rights to evict, then the unlawful detainer case may be dismissed.

This notice plus the utilities being shut off may motivate them to move on.If occupancy continues, then I suggest hiring an eviction attorney to file an unlawful detainer in court.